The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 31, 1991
Filed:
Apr. 23, 1990
Applicant:
Inventors:
David E Vokey, Tolland, CT (US);
Kenneth N Sontag, Winnipeg, CA;
Assignee:
Automated Light Technologies, Inc., Waterbury, CT (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R / ; G08B / ;
U.S. Cl.
CPC ...
324541 ; 324544 ; 340604 ;
Abstract
A system is provided for monitoring a communications cable for moisture penetration. A line signal generator is connected to a metal armour layer of the cable to apply a line signal to the armour. Changes in the line signal current are monitored to detect the condition of the cable. Moisture penetration can be monitored throughout the length of the cable. The armour layer is maintained at a negative potential with respective ground. This provides an additional cathodic protection to the cable.